Concrete placement apparatus



April 30, 1940. c, JACKSON 2,199,075

CONCRETE PLACEMENT APPARATUS Filed Nov. 7, 1938 2 Sheets-Sheet 1 INVENTOR. I orwd/ wakaon BY a WaMW ATTORNEYS.

April 30, 1940,

c. JACKSON 2,199,075

CONCRETE PLACEMENT APPARATUS Filed NOV. 7, 1938 2 Sheets-Sheet 2 INVENTOR. Carwfl/ (/00/16'0/7 ATTORNEYS Patented Apr. 30, 1940 t Q 1 I v UNITED STATES PATENT OFFICE v CONCRETE PLACEMENT APPARATUS Corwill Jackson, Luglington, Mich. Application November "7, 1938, Serial N0. 239,311 -12 Claims. (CI. 94-48) This invent-ion relates to improvements in conplify the illustration andfor thesake of clarity. crete placement apparatus. In the accompanying drawings, the carriagel The main objects of this invention are: of the paving machine is provided with wheels First, to provide a machine or apparatus for 2 adapted to travel on the'longitudinalmembers the placement of concrete such as pavements, 3 of apavement formpThescreed l is mounted 5 concrete s1abs,the walls of ditches or conduits,and on the carriage for advancement therewith and the like in which the edge portions of the pavev is provided with-forwardly diverging wings 5 ment or slab are very efiectively-subjected to vidisposed and supported "for sliding engagement bration without objectionable vibration of the withthe form'members'3 in advance of thewheels, in forms. keeping the wheels free from scraping the com Second, to provide a machine or apparatus of crete material from-the forms and-also supportthis character in which the paving-slabs are -efing the concrete material or preventing piled-up fectively subjected to vibration from edge to edge concrete material subjected to the action..ofthe thereof. I main vibratory element 6- fr0m--0Verfl0Wing the i5 Objects relating to detailsand economies of the forms. invention will appear from the description to This vibratory element 6 is an elongatedvifollow. The invention is defined and pointed out bratory element and is disposed horizontally in in the claims. front of the screed'and transversely'of the car- Preferred embodiments of the invention are riage. Its operative relation to the screed is prefm illustrated in the accompanying drawings, in erably as illustrated .in my said "Patent No. which: I r Y 2,150,326. Theelement 6 is mounted for high Fig. 1 is a fragmentaryside elevation of a pavfrequency vibration and providedvwithmeans -ior ing machine or apparatus embodying the features accomplishing that end. Practical meansare ilof my invention shown in operative relation to lustratedinmysaid Letters Patent,2,15 0, 3 26, The apaving formanda mass of concrete,- various means for raising and lowering the vibratoryele- 5 parts being conventionally illustrated and other ment 6 are designated-generally by the numeral, partsof the apparatus being omitted for conven- 'l, the means shown beingahydraulic .means. ience in illustration. The carriage is provided with ,forwardly pro- Fig' 2 is a fragmentary view. in section-one jecting supporting bars 8 at veachzsi'de, thesebars 5U line corresponding to line 2-2 of Fig.1. being detachably mounted on the frameof the! 2 Fig. 3 is a-fragmentary View in horizontal seccarriage at 9 so that they can be readily applied tion on line 3-3 of Fig. 2. r or removed, as in thisembodiment showninFigs. Fig/lie a fragmentaryside elevation of-a mod- 1 to3'no means are providedfor elevating'them ified form or embodiment of the invention. for the travel of the machine other than on the Fig. 5 is a fragmentary side elevation of anlongitudinal form members 3. However, it is 0 other modified form or embodiment of the inmerely a matter of removing four bolts indivention. I r cated in order to detach the bars.

Fig. 6 is a fragmentary view-partially in sec-. The bars carry the fiexiblenon-extensiblehangtion'on-line 6-6 of Fig.5. ers. H) which are clamped to the plates M by 40 My present invention relates in general to'pav- .means ofsclampingstrips .I-.2,.'-the'-.plates H being ing machinesor apparatus employing vibratory .metal and the-hangers .lflbeing preferably .sec- 40 elements mounted on a carriage and=disposed-in tions of wide belt or other suitable non-extensiadvance of a screed operated or-translatedthereble flexible material. In other words, thesezhangwith,- one of. my embodiments of suchanappaers II] are plate-like membersdisposed von the ratus being illustrated in my Letters Patent'No. bars .8 for edgewise advancement.

2,150,326-dated March 4, 1939. The-apparatusis To the lower ends of these han ers 10;, Lseespecially designed for thepracticingof-the-methcure guard Pl e l he nard plates bein .od ofplacing concreteof my Patent No. 787,449, clamped to the hangers-by means ofrthe clampdated January 6,1931. ki a l4 and suitable bo ts or rivets. The Ihave, in the accompanying drawings, illusguard platesdepend atthe innensideoflthe'form 50 trated only such portions of a paving :machine members 3 to travelalongthe same as the maor apparatus as seemsto me to be necessary or chine'isadvanced. The guard plates are prefer- ,desirable to illustrate practical commercial emably provided with out-turned front edges l5 .bo'diments of my present inventionand-various havinga scraping engagement with the forms parts are;:shcwnconventionally in order :to simas the machine is advanced. 55

The hangers Ill also carry the longitudinally disposed auxiliary vibratory elements I 6 which have upwardly projecting brackets I I secured to the hangers I 0 intermediate the point of their attachment to the plates II and the attachment of the guard plates thereto by means of suitable clamping plates I8 and the bolts or rivets l9.

' This provides a support for the vibratory elements It which permits free vibratory movement thereof.

The vibratory elements I6 are preferably tubular and have tapered or conical ends 20. In the preferred embodiment, the vibratory elements constitute housings for electric motors conventionally shown at 2|, the rotors 22 of which are provided with unbalancing weights 23. Electrical connections for the motors are convention- 'ally indicated at 24.

By this means, the vibratory elements iii are vibrated at high frequency and in opposed relation to the guardplates but out of contact therewith. The mass of concrete is indicated at 25 and the vibrations set up therein by the vibratory elements is indicated at 26, see Fig. 2.

The guard plates are effective in preventing undesirable vibration of the forms. However, the concrete mass is vibrated along the forms .so that portions not directly subjected to the vibrations of the vibratory element 6 are effectively vibrated.

In the embodiment shown in Fig. 4, the vibratory element 21' is in the form of a plate having a vibratory motor 28 mounted on the top thereof. This plate 21 is suspended from the flexible hangers 29 from the support 3!] pivoted at 3! and raised and lowered by means of the cable 32 and the winch 33, being supported in its lowered position by means of the cable. In this illustration, the guard plate is omitted.

In the embodiment of .my invention illustrated in Fig. 5, the'plate 34 is mounted by means of the flexible hanger 35 from the pivoted support 36 which is adjusted by means of the cable -31. The main vibratory element 38 in this embodiment is provided with a transversely disposed shoe 39 at the end thereof acting in opposed relation to the guard plate 34. A similar arrangement is illustrated in my application for Letters Patent Serial No. 234,918, the flexible mounting of the guard plate, however, not being disclosed in that application.

I have illustrated and described my improvements in what I consider highly practical embodiments thereof. I have not attempted to illustrate or describe other modifications or adaptations as it is believed that this disclosure will enable those skilled in the art to embody or adapt my improvements as may be desired.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In an apparatus of the class described, the combination with a carriage adapted to travel on the longitudinal members of a form, of a screed propelled with said carriage, an elongated horizontally disposed vibratory element mounted on said carriage transversely thereof in advance of said screed, flexible hangers carried by said carriage, guard plates mounted on said hangers to travel along the inner sides of the longitudinal form members, and submersible auxiliary vibratory elements mounted on said hangers independently of said guard plates and supported for vibratory movement at the inner sides of said guard plates in non-contacting relation thereto.

2. In an apparatus of the class described, the combination with a carriage adapted to travel on the longitudinal members of a form, of hangers carried by said carriage, guard plates mounted on said hangers to travel along the inner sides of the longitudinal form members, and submersible vibratory elements mounted on said hangers independently of said guard plates and supported for vibratory movement at the inner sides of said guard plates in non-contacting relation thereto.

3. In an apparatus of the class described, the

'combination with a carriage adapted to travel on the longitudinal members of a form, of supporting means on said carriage, flexible hangers carried by said means, guard plates mounted on the lower ends of said hangers to travel along the inner sides of the longitudinal form members and having out-turned forward edges adapted for sliding engagement with the inner sides of the form members, and submersible vibratory elements disposed longitudinally of the carriage and clamped to said hangers intermediate the supporting means and guard plates for mounting said longitudinal vibratory elements for vibratory movement at the inner sides of said guard plates.

4. In an apparatus of the class described, the combination with a carriage adapted to travel on the longitudinal members of a form, of a screed propelled with said carriage, an elongated horizontally disposed vibratory element mounted on said carriage transversely thereof in advance of said screed, guard plates mounted on said carriage for advancement at the inner sides of the longitudinal members of a form, and submersible vibratory elements mounted on said carriage for vibratory movement at the inner sides of said guard plates in non-contacting relation thereto.

5. In an apparatus of the class described, the combination with a carriage adapted to travel on the longitudinal members of a form, of guard plates mounted on said carriage for advancement at the inner sides of the longitudinal members of a form, and submersible vibratory elements mounted on said carriage for vibratory movement at the inner sides of said guard plates in non-contacting relation thereto.

6. In an apparatus of the class described, the combination with a carriage, of a flexible nonextensible hanger member mounted on said carriage, a guard plate mounted on the lower end of said hanger and adapted to travel at the inner side of a form member as the carriage is advanced, and a submersible vibratory element mounted on said hanger intermediate the carriage and guard plate and independently of the guard plate attachmentto the hanger.

'7. In an apparatus of the class described, the combination with a carriage, of a guard plate mounted on said carriage to depend on the inner side of a form member on which the carriage is traveling, and a submersible vibratory element provided with vibrating means mounted on said carriage in opposed relation to said guard plate.

8. In an apparatus of the class described, the combination with a carriage, of an elongated horizontally disposed main vibratory element.

opposed relation to said shoe, and flexible means.

v vancement.

tudinal form member, and a-motor mounted on the upper edge of said vibratory element and provided with an unbalancing weight.

10. In an apparatus of the class described, the combination with a carriage adapted to travel on the longitudinal members of a form, of a lon gitudinally disposed plate-like vibratory'element,

means for supporting said vibratory element for edgewise advancement at the inner side of a longitudinal form member, and means for vibrating said vibratory element at high frequency.

0 11. In an apparatus of the classdescribed, the

combination with a carriage adapted to travel on the longitudinal members of a form, of a transversely disposed elongated submersible vibratory element, and longitudinally disposed submersible vibratory elements mounted on said carriage in advance of said transversely disposed vibratory element for endwise advancement adjacent to and in parallel relation to the longitudinal form members upon which the carriage travels but in non-contacting relation therewith.

12-. In an apparatus of the class described, the combination with a carriage adapted to travel on longitudinal members of a form, of a longitudinally disposed submersible vibratory element mounted on said carriage'for endwise advancement to and in parallel relation to a longitudinal form member upon which the carriage travels but in non-contacting relation therewith.

comm JACKSON. 20 

